Energy

4. Another name for heat energy.
7. This energy source uses methane from the burning of trash and sewage.
10. Wind and moving water are examples of which energy type.
13. The Law of ______ of Energy states: Energy cannot be created or destroyed; however, it can be converted from one form to another.
15. An example of a renewable energy source.
16. time people have used more energy, today one person uses more than ____ times more energy than some of the earlier humans.
18. The world relies heavy on these 3 energy resources: Gas, Coal, and ___.

1. Fuels/ This energy source causes a great amount of pollution.
2. Energy in motion. Examples include: water flowing, moving car, moving wheel.
3. A battery in a flashlight has ____ energy.
5. Natural gas is mostly made up of a gas called ____.
6. The study of energy.
8. Energy type that is stored within a chemical substance.
9. This advanced technology combines the use of gasoline engines and electric motors for cars.
11. This energy resource produces huge amounts of energy from small amounts of fuel but can be very dangerous.
12. ability to do work
14. Biological materials that can be grown and harvested are ____ energy resources
17. This energy type uses the SUN as its primary source.